Harvard’s School of Engineering and Applied Sciences (SEAS) has come up with a flat silicon-based Lens that can focus light without any distortion or optical aberrations, such as those found with even the best made curved glass lenses.
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The gold-and-silicon lensWhere to buy 6123 creates a “perfect image” without any distortion, and can be used on more than just visible light – it works on frequencies ranging from near-infrared (with wavelengths just smaller than visible light) to the difficult to measure and modulate terahertz radiation (with wavelengths just larger than microwaves) or, EM radiation with wavelengths falling roughly between 2 microns and 1 millimetre. Adjusting the angle, spacing and size of the nanoantennas, or the ‘metasurface’ of the lensWhere to buy 6123, will allow it to be tuned for different spectrums of radiation.
Principal investigator Federico Capasso, the Robert L. Wallace Professor of Applied Physics and Vinton Hayes Senior Research Fellow in Electrical Engineering at SEAS, spoke of the new type of lensWhere to buy 6123, saying: “Our flat lensWhere to buy 6123 opens up a new type of technology. We’re presenting a new way of making lenses. Instead of creating phase delays as light propagates through the thickness of the material, you can create an instantaneous phase shift right at the surface of the lensWhere to buy 6123.”
Francesco Aieta, lead author, and visiting graduate student from the Università Politecnica delle Marche in Italy, added: “In the future we can potentially replace all the bulk components in the majority of optical systems with just flat surfaces. It certainly captures the imagination.”
Read more, at Harvard’s SEAS page.